Send TranslateEventProtos to UMA.

components/translate/core/browser/translate_ranker.cc

Index: components/translate/core/browser/translate_ranker.cc
diff --git a/components/translate/core/browser/translate_ranker.cc b/components/translate/core/browser/translate_ranker.cc
index 358675025ec78fbedfcdddd5dd152d3bb0367fef..d01429c0c78bff11651f75f0391b6aa1eb534ad3 100644
--- a/components/translate/core/browser/translate_ranker.cc
+++ b/components/translate/core/browser/translate_ranker.cc
@@ -12,6 +12,7 @@
 #include "base/metrics/histogram_macros.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_util.h"
+#include "components/metrics/proto/translate_event.pb.h"
 #include "components/translate/core/browser/proto/translate_ranker_model.pb.h"
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "components/translate/core/browser/translate_prefs.h"
@@ -282,4 +283,15 @@ void TranslateRanker::ParseModel(int /* id */,
   model_fetcher_.reset();
 }
 
+void TranslateRanker::FlushTranslateEvents(
+    std::vector<metrics::TranslateEventProto>* translate_events) {
+  translate_events->swap(translate_events_cache_);
+  translate_events_cache_.clear();
+}
+
+void TranslateRanker::RecordTranslateEvent(
+    const metrics::TranslateEventProto& translate_event) {
+  translate_events_cache_.push_back(translate_event);
+}
+
 }  // namespace translate